Question

when a sound wave reaches a material boundary, different results are possible.
identify each result described in the table.
result description

the wave crosses the boundary and travels through the material
the wave’s energy is taken in by the material and converted to another form
the wave bounces back after reaching the boundary
reflection
transmission
absorption

Explanation:

First Matching (Description: the wave bounces back after reaching the boundary)

Reflection is the phenomenon where a wave (like a sound wave) hits a boundary and bounces back. The description "the wave bounces back after reaching the boundary" matches the definition of reflection.

Absorption occurs when a material takes in the energy of a wave (such as sound) and converts that energy into another form (like heat). The description about the wave's energy being taken in and converted fits absorption.

Transmission is when a wave (sound, in this case) crosses a boundary and continues to travel through the new material. The description "the wave crosses the boundary and travels through the material" aligns with transmission.

Answer:

reflection

Second Matching (Description: the wave’s energy is taken in by the material and converted to another form)